Effect of 1064 nm Nd:YAG and 980 nm laser with irrigants protocols on radicular dentin microhardness and roughness

• Grant number: 13/23535-7
• Support Opportunities: Scholarships in Brazil - Scientific Initiation
• Start date: May 01, 2014
• End date: October 31, 2015
• Field of knowledge: Health Sciences - Dentistry - Endodontics
• Principal Investigator: Walter Raucci Neto
• Grantee: Helena Suleiman de Macedo
• Host Institution: Universidade de Ribeirão Preto (UNAERP). Campus Ribeirão Preto. Ribeirão Preto , SP, Brazil

Abstract

The aim of this study is to evaluate the effects of the association of 1064 nm Nd:YAG and 980 nm diode laser with irrigation protocols in microhardness and roughness of bovine root dentin. 25 bovine incisors will be longitudinally split into 2 halves (n = 50). The initial values of the samples will be obtained from cervical, middle and apical root third in which the subsurface microhardness and surface roughness will be measured before the treatments application. After initial testing the 50 samples will be randomly divided among the following groups (n = 10): 1 - deionized water (negative control); 2 - 17% EDTA without agitation (positive control 1); 3 - 17% EDTA with manual agitation (positive control 2); 4 - 17% EDTA + 50 seconds of diode laser (2W) agitation; 5 - 17% EDTA + 50 seconds of NdYAG laser (1.5W) agitation . After treatments all specimens will be irrigated with 2.5% sodium hypochlorite and distilled water, except for the negative control group. Subsequently the samples will be retested to microhardness and roughness tests to obtain the final values. The data will be analyzed for the distribution and homogeneity to determine the appropriate statistical method. The morphological analysis will be performed by the images obtained by confocal laser microscopy.

Scientific publications

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

DE MACEDO, HELENA SULEIMAN; COLUCCI, VIVIAN; FURTADO MESSIAS, DANIELLE CRISTINE; ABI RACHED-JUNIOR, FUAD JACOB; FERNANDES, FERNANDA SILVA; CORREA SILVA-SOUSA, YARA TERESINHA; RAUCCI-NETO, WALTER. Effect of Nd:YAG (1064-nm) and Diode Laser (980-nm) EDTA Agitation on Root Dentin Ultrastructure Properties. Photomedicine and Laser Surgery, v. 33, n. 7, p. 349-356, JUL 1 2015. (13/23535-7)

HELENA SULEIMAN DE MACEDO; DANIELLE CRISTINE FURTADO MESSIAS; FUAD JACOB RACHED-JÚNIOR; LIGIA TEIXEIRA DE OLIVEIRA; YARA TERESINHA CORREA SILVA-SOUSA; WALTER RAUCCI-NETO. 1064-nm Nd:YAG and 980-nm Diode Laser EDTA Agitation on the Retention of an Epoxy-Based Sealer to Root Dentin. Brazilian Dental Journal, v. 27, n. 4, p. 424-429, 2016-08-00. (13/23535-7)